Plumb-level.



N0- 841,562. Y PATENTED JAN. l5, 1907. v L. B. NELSON.

PLUMB LEVEL.

- APPLICATION FILED MAY 9, 1906. v

Zen/f NeZt-roiz.

LEWIS B. NELSON, OF

PATENT FFQE.

CLEARMONT, MlSSOURI.

PLUME-LEVEL.

Specification. of Letters Patent.

Patented Jan. 15, 1907.

Application filed May 9, 1906. Serial No. 315.910.

To @ZZ whom, it may concern.-

Be it known that LEWIS B. NELSON, a citizen of the United States of America, residing at Clearmont, in the county of Nodaway and State of Missouri, have invented new and useful Improvements in Plumb'- Levels, yof which the following is a specification.

This invention relates to improvements in plumb-levels, the object of the invention being to provide an instrument of this character for general use which embodies a novel construction of plumbing or leveling device and means for mounting the same in the stock so as to effectually prevent injury thereto.

The invention consists of the features of construction, combination, and arrangement of parts, hereinafter fully described and claimed, and is illustated in the accompanying drawings, in which- Figure 1 is a side elevation of a plumblevel constructed in accordance with the invention, a portion of the stock being broken away in longitudinal section to show the leveling device. Fig. 2 is a top plan view of the same. Fig. 3 is a central vertical transverse section. Fig. 4 is a top plan view of the hanger-plate. Fig. 5 is a detail view of the securing and truing screw thereof.v Fig. 6 is a longitudinal'section through the hood and its holding-plate. Fig. 7 is a cross-section of the same on line 7 7 of Fig. 6.

Referring to the drawings, the numeral 1 designates the body or stock of the instrument, which may be made of wood, metal, or any other suitable material. This stock is recessed or mortised in one of its side edges to form a rectangular longitudinal socket or chamber 2 and an underlying vertical socket or chamber 3, communicating at its upper end with said socket 2, the said socket 3 being of less width or length longitudinally than the socket 2 to provide supporting seats or shoulders 4 at the point of junction of said sockets.

A hanger-plate 5 rests upon the shoulders 4 and extends across the mouth of the socket 3, said plate being provided at one end with an opening 6 for the passage of a screw or other ordinary fastening 6a to secure it to one of the shoulders, while the other end of the plate is formed with a slot 7, opening through the edge thereof and adapted for The screw S enters the other is provided with operating and supporting heads 9 and 10, arl ranged to form an intervening groove and l neck to receive and engage the slotted end 7, by which said end of the plate is connected with the screw, so that by manipulating the latter the plate may be adjusted to a slight extent to true it up with the stock. It will l be understood that the hanger-blade 5 is l free to have slight vertical pivotal movell ment on the screw 6a and that consequently j it may be vertically adjusted to compensate for any inaccuracy in the level of the shoul- I ders 4 and adapt the plate to be set to bring l the pointer to a-true vertical position when the stock lies on a true horizontal position. The central portion of the plate 5 is formed with a longitudinal slot 12 and is providedon opposite sides with bearing-lugs j 13, having screw-threaded sockets to receive threaded bearing-pins 14, provided with conical or pointed inner ends, the outer ends of the screws being to be conveniently adjusted in and out by a shoulder 4 and j truing screw 8. l l

screw driver or other suitable tool. A pointer 15 projects through and swings in the slot 12 and is carried by a weighted arm or pendulum 15, arranged in the socket 3, j the said arm being provided with conical j bearing-sockets to receive the conical inner ends of the pins 14, whereby the pendulumointer is mounted to swing thereon.

nicked to enable them Arranged above the pointer is a hood 16, I

formed of glass or other suitable transparent material, and provided at its apex or highest central point with a gage-mark 17, with which the pointer is adapted to register when the stock is in level position. This hood covers and incloses the pointer and slot 12 and prevents access of dust and dirt j to the bearings and socket 3. This hood is j retained in position by a holding frame or l late 18, perforated at its ends for the passage of fastenings to secure it to the plate 5, said holding frame or plate being formed with keepers 19 for the reception of lugs or pro- IOO l jections 2O on the hood, whereby the latter v the reception of a 'combined fastening and 2 plate being countersunk in the side edge of f cured to the plate and inclosing the 'the stock to lie Hush with the face thereof j and having a gage-mark, said hood and pointer being' visible through said sightopening.

4. In a device of the character described, i the combination of a stock having a socket, av frame-plate arranged therein and provided with a slot and threaded bearing-sockets on opposite sides thereof, bearing-screws arranged in said sockets and having pointed inner ends, a pendulum-pointer projecting through the slot in the frame-plate and having bearing-sockets vreceiving the pointed ends of the screws, and a transparent gagehood detachably secured tothe frame-plate and receiving and cooperating with the pointer.

5. In a device of the character described, the combination of a stock having upper and and detachably secured to the same by screws 24.

It will be seen from the foregoing description, from which the operation of the device will be readily understood by those versed in the art, that my invention provides a simple, convenient, and effective construction of instrument in which the leveling device is mounted in such manner as to house it from injury and enable it to be conveniently adjusted to compensate for wear as occasion re uires.

I* or the purpose of adapting the device for use as a plumb the construction and arrangement of parts hereinbefore describedis duplij cated at one end of the stock, as indicated by dotted lines in Fig. l.

Having thus described the invention, what is claimed as new isintersection thereof, a slotted supportingl. In a device of the character described, plate secured at one end to one of said shoulthe combination of a socket, a frame-plate ders and having a slot at its opposite end, a arranged therein, said plate being provided transparent hood carried by the plate and with a slot, a-pendulum-pointer pivoted to having a gage-mark, a pendulum-pointer the plate and projecting upward through projecting through the central slot in the said slot, a transparent hood detachablyseplate and into the hood and pivoted to the pointer, plate, and a securing and truing screw'enand a plate extending across the top of the gaging the slot in the end of the plate and adsocket through which the hood and pointer justably fastening the same to the other may be observed. shoulder.

2. In a device of the character described, 6. In a device of the kcharacter described, the combination of a stock having a socket, a the combination of a stock having' a socket, a slotted frame-plate arrangedtherein, apenduframe-plate secured therein and having a lum-pointerpivoted to said plate and projecti slot, a pendulum pointer pivoted to the ing through the slot therein, a transparent plate and projecting upward through the hood arranged above said slot and inclosing slot, a holding-plate detachably secured to the pointer, and aholder detachably securing the frame-plate, and atransparent hood dethe hood to the frame-plate. tachably connected with the holding-plate 3. In a device of the. character described, and receiving the the combination of a stock having' a socket, a a gage-mark. plate extending across the top of the socket In testimony whereof I afiiX and having' a sight-opemng, a frame-plate j in presence of two Witnesses. arranged horizontally in t ie socket an having abslot, a pendulum-pointer pivoted to I LEWIS B NELSON' said plate and projecting upward through said slot, and a transparent hood detachably secured to the plate and inclosing the pointer my signature Witnesses:

B. R. NEwLoN, HENRY WEBER.

lower sockets and shoulders at the lpoint ofA pointer and provided with 

